Amapulastiki abhekisela ezintweni ezakhiwe ngokuyinhloko ngama-resin (noma ama-monomers enziwe i-polymerized ngokuqondile ngesikhathi sokucutshungulwa), ahlanganiswe nezithasiselo ezifana nama-plasticizers, ama-fillers, ama-lubricant, nama-colorants, angabunjwa abe yisimo ngesikhathi sokucubungula.
Izici Eziyinhloko Zepulasitiki:
① Amapulasitiki amaningi alula futhi azinzile kumakhemikhali, amelana nokugqwala.
② Ukumelana nomthelela omuhle kakhulu.
③ Ukucaca okuhle nokumelana nokugqoka.
④ Izakhiwo zokuvikela ezinokushisa okuphansi.
⑤ Ngokuvamile kulula ukubumba, umbala, nokucubungula ngezindleko eziphansi.
⑥ Iningi lamapulasitiki anokumelana nokushisa okungekuhle, ukunwebeka okuphezulu kokushisa, futhi ayavutha.
⑦ Ukungazinzi kwe-Dimensional, okujwayele ukuguquguquka.
⑧ Amapulasitiki amaningi abonisa ukusebenza okuphansi kwezinga lokushisa eliphansi, abe brittle ezimweni ezibandayo.
⑨ Kulula ukuguga.
⑩ Amanye amapulasitiki ancibilika kalula kuzincibilikisi.
Ama-phenolic resinsasetshenziswa kakhulu ezinhlelweni ze-FRP (Fiber-Reinforced Plastic) ezidinga izakhiwo ze-FST (Umlilo, Intuthu, kanye Nobuthi). Naphezu kwemikhawulo ethile (ikakhulukazi i-brittleness), ama-phenolic resins ahlala eyingxenye enkulu yama-resin ezentengiselwano, ngokukhiqizwa kwaminyaka yonke komhlaba okungaba amathani ayizigidi ezingu-6. Ama-phenolic resins ahlinzeka ngokuzinza okuhle kakhulu kwe-dimensional kanye nokumelana namakhemikhali, agcina ukuzinza ngaphakathi kwebanga lokushisa elingu-150-180°C. Lezi zakhiwo, kuhlanganiswe nenzuzo yazo yokusebenza kwezindleko, kuqhuba ukusetshenziswa kwazo okuqhubekayo emikhiqizweni ye-FRP. Izicelo ezijwayelekile zihlanganisa izingxenye zangaphakathi zendiza, amalayini wezimpahla, ingaphakathi lemoto kaloliwe, ama-grating namapayipi eplathifomu kawoyela yasogwini, izinto zomhubhe, izinto zokungqubuzana, ukuvala umlomo wamarokhethi, neminye imikhiqizo ehlobene ne-FST.
Izinhlobo ze-Fiber-Reinforced Phenolic Composites
Izinhlanganisela ze-phenolic eziqiniswe nge-fiberzihlanganisa izinto ezithuthukisiwe ngemicu eqoshiwe, izindwangu, nemicu eqhubekayo. Imicu enqunyiwe yakuqala (isb., ukhuni, i-cellulose) isasetshenziswa emikhakheni yokubumba i-phenolic emisebenzini ehlukahlukene, ikakhulukazi izingxenye zezimoto ezifana namakhava epompo yamanzi kanye nezingxenye zokungqubuzana. Izinhlanganisela zokubumba zesimanje ze-phenolic zihlanganisa imicu yengilazi, imicu yensimbi, noma kamuva nje, imicu ye-carbon. Ama-phenolic resins asetshenziswa kuma-molding compounds ama-novolac resins, aphulukiswa nge-hexamethylenetetramine.
Izinto zendwangu ezifakwe ngaphambili zisetshenziswa ezinhlelweni ezihlukahlukene, njenge-RTM (Resin Transfer Molding), izakhiwo zesemishi lezinyosi, ukuvikelwa kwe-ballistic, amaphaneli angaphakathi endizeni, namalayini wezimpahla. Imikhiqizo eqhubekayo ye-fiber-reinforced yenziwa nge-filament winding noma i-pultrusion. Indwangu nokuqhubekayoizinhlanganisela ze-fiber-reinforcedngokuvamile zisebenzisa amanzi- noma ama-phenolic resins ancibilikayo ancibilikayo. Ngaphandle kwama-resole phenolics, ezinye izinhlelo ze-phenolic ezihlobene—njengama-benzoxazine, i-cyanate esters, ne-Calidur™ resin esanda kwakhiwa—nazo ziyasetshenziswa ku-FRP.
I-Benzoxazine uhlobo lwenoveli lwe-phenolic resin. Ngokungafani nama-phenolic endabuko, lapho izingxenye zamangqamuzana zixhunyaniswa ngamabhuloho e-methylene [-CH₂-], ama-benzoxazine enza isakhiwo se-cyclic. I-Benzoxazines ihlanganiswa kalula kusuka ezintweni ze-phenolic (i-bisphenol noma i-novolac), ama-amine ayinhloko, ne-formaldehyde. I-polymerization yabo evula indandatho ayikhiqizi izinto ezishintshayo noma eziguquguqukayo, okuthuthukisa ukuzinza kwe-dimensional yomkhiqizo wokugcina. Ngaphandle kokushisa okuphezulu nokumelana nomlilo, ama-benzoxazine resins abonisa izakhiwo ezingekho kuma-phenolics wendabuko, njengokumuncwa okuphansi komswakama nokusebenza okuzinzile kwe-dielectric.
I-Calidur™ isizukulwane esilandelayo, ingxenye eyodwa, i-polyarylether amide thermosetting resin yesizukulwane esilandelayo, enezinga lokushisa elisegumbini eyakhiwe ngu-Evonik Degussa yezimboni ze-aerospace nezimboni ze-electronics. Le resin yelapha ku-140°C emahoreni ama-2, ngezinga lokushisa lengilazi (Tg) lika-195°C. Njengamanje, i-Calidur™ ibonisa izinzuzo eziningi zezinhlanganisela ezisebenza kahle kakhulu: akukho kukhishwa okuguquguqukayo, ukusabela okuphansi kwe-exothermic kanye nokuncipha ngesikhathi sokwelashwa, amandla aphezulu okushisa nawokumanzi, ukucindezela kwenhlanganisela ephakeme namandla okugunda, kanye nokuqina okuhle kakhulu. Le resin emisha isebenza njengenye indlela engabizi kakhulu kune-mid-to-high-Tg epoxy, i-bismaleimide, nezinhlaka ze-cyanate ester ku-aerospace, ezokuthutha, ezezimoto, zikagesi/zogesi, nezinye izinhlelo zokusebenza ezinzima.
Isikhathi sokuthumela: Jun-24-2025